Okla. Admin. Code § 325:10-1-23
The organization shall erect and maintain a glass enclosed bulletin board close to the Racing Secretary's Office in a place where access is granted to all licensees, upon which all official notices of the Commission shall be posted. The organization shall also erect and maintain a glass enclosed bulletin board in the grandstand area where access is granted to all race day patrons, upon which all official notices of the Commission shall be posted.